Home / 21,319.54-29,412.72-12,365.39

Finding the Fourth Proportional to 21,319.54, 29,412.72 and 12,365.39

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Solution

The fourth proportional to 21,319.54, 29,412.72 and 12,365.39 is: 17,059.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.54 : 29,412.72 = 12,365.39 : x
  2. Step 2: Convert to fraction form
    21,319.54/29,412.72 = 12,365.39/x
  3. Step 3: Cross multiply
    21,319.54x = 29,412.72 × 12,365.39
  4. Step 4: Simplify right side
    21,319.54x = 363,699,827.29
  5. Step 5: Solve for x
    x = 363,699,827.29/21,319.54
  6. Step 6: Final answer
    x = 17,059.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.